今天在做一個織夢企業網站的時候，需要用到分類信息，是用的DEDECMS V5.7版本的，在修改聯動類別里面的信息類型的時候發現只能增加一級選擇和三級選擇，就是不能增加二級選擇，怎么辦呢？

去織夢官方找了下解決辦法沒得，看來只能自己研究了。

后來使用DEDECMSV5.6版本的進行測試，發現5.6的是可以使用的，那就可以找到解決的辦法了。

首先我們找到我們的模板源碼下面的 dede/stepselect_main.php 這個文件，

將這段代碼

else if($action=='addenum_save')

{

if(empty($ename) || empty($egroup))

{

Showmsg("類別名稱或組名稱不能為空！","-1");

exit();

}

if($issign == 1 || $topvalue == 0)

{

$enames = explode(',', $ename);

foreach($enames as $ename)

{

$arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND (evalue MOD 500)=0 ORDER BY disorder DESC ");

if(!is_array($arr)) $disorder = $evalue = ($issign==1 ? 1 : 500);

else $disorder = $evalue = $arr['disorder'] + ($issign==1 ? 1 : 500);

$dsql->ExecuteNoneQuery("INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)

VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ");

}

WriteEnumsCache($egroup);

ShowMsg("成功添加枚舉分類！".$dsql->GetError(), $ENV_GOBACK_URL);

exit();

} else if ($issign == 2 && $topvalue != 0)

{

$minid = $topvalue;

$maxnum = 500; // 三級子類最多500個

$enames = explode(',', $ename);

foreach ($enames as $ename)

{

$arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND evalue LIKE '$topvalue.%%%' ORDER BY evalue DESC ");

if(!is_array($arr))

{

$disorder = $minid;

$evalue = $minid.'.001';

}

else

{

$disorder = $minid;

preg_match("#([0-9]{1,})\.([0-9]{1,})#", $arr['evalue'], $matchs);

$addvalue = $matchs[2] + 1;

$addvalue = sprintf("%03d", $addvalue);

$evalue = $matchs[1].'.'.$addvalue;
 

}

$sql = "INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)

VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ";

// echo $sql;exit;

$dsql->ExecuteNoneQuery($sql);

}

// echo $minid;

WriteEnumsCache($egroup);

ShowMsg("成功添加枚舉分類！", $ENV_GOBACK_URL);

exit();

} else {

$minid = $topvalue;

$maxid = $topvalue + 500;

$enames = explode(',', $ename);

foreach($enames as $ename)

{

$arr = $dsql->GetOne("SELECT * FROM `dede_sys_enum` WHERE egroup='$egroup' AND evalue>$minid AND evalue<$maxid ORDER BY evalue DESC ");

if(!is_array($arr))

{

$disorder = $evalue = $minid+1;

}

else

{

$disorder = $arr['disorder']+1;

$evalue = $arr['evalue']+1;

}

$dsql->ExecuteNoneQuery("INSERT INTO `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)

VALUES('$ename','$evalue','$egroup','$disorder','$issign'); ");

}

WriteEnumsCache($egroup);

ShowMsg("成功添加枚舉分類！", $ENV_GOBACK_URL);

exit();

}

}

替換為：

else if($action=='addenum_save')

{

if(empty($ename) || empty($egroup)) {

Showmsg("類別名稱或組名稱不能為空！","-1");

exit();

}

if($issign==1 || $topvalue==0)

{

$enames = explode(',', $ename);

foreach($enames as $ename)

{

$arr = $dsql->GetOne("Select * From `dede_sys_enum` where egroup='$egroup' And (evalue mod 500)=0 order by evalue desc ");

if(!is_array($arr)) $disorder = $evalue = ($issign==1 ? 1 : 500);

else $disorder = $evalue = $arr['disorder'] + ($issign==1 ? 1 : 500);

$dsql->ExecuteNoneQuery("Insert into `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)

values('$ename','$evalue','$egroup','$disorder','$issign'); ");

}

WriteEnumsCache($egroup);

ShowMsg("成功添加枚舉分類！".$dsql->GetError(), $ENV_GOBACK_URL);

exit();

}

else

{

$minid = $topvalue;

$maxid = $topvalue + 500;

$enames = explode(',', $ename);

foreach($enames as $ename)

{

$arr = $dsql->GetOne("Select * From `dede_sys_enum` where egroup='$egroup' And evalue>$minid And evalue<$maxid order by evalue desc ");

if(!is_array($arr))

{

$disorder = $evalue = $minid+1;

}

else

{

$disorder = $arr['disorder']+1;

$evalue = $arr['evalue']+1;

}

$dsql->ExecuteNoneQuery("Insert into `dede_sys_enum`(`ename`,`evalue`,`egroup`,`disorder`,`issign`)

values('$ename','$evalue','$egroup','$disorder','$issign'); ");

}

WriteEnumsCache($egroup);

ShowMsg("成功添加枚舉分類！", $ENV_GOBACK_URL);

exit();

}

}

然后保存，在系統后臺更新系統緩存就可以了的。現在在后臺的聯動類別管理里面就可以增加二級選擇了。